Safety-hook



(-No Model.) 2 Sheets-Sheet 1. W. K. RAIRIGH.

SAFETY HOOK.

No. 271,116. PatentedJanQZS, 1883.

(No Model.) 2 Sheets-Sheet 2.

W. K. RAIRIGH.

, SAFETY HOOK.

No. 271.116. Patented Jan.23, 1.883.

NITED STATES PATENT OFFICE.

IVILLIAM K. RAIRIGH, OF ST. PETERSBURG, PENNSYLVANIA.

SAFETY-HOOK.

SPECIFICATION forming part of Letters Patent,No. 271,116, dated January23, 1883. Application filed September 13, 1882. (No model.)

.To all whom it may concern Be it known that I, WM. K. RAIRIGH, of St.Petersburg, in the county of Clarion and State of Pennsylvania, haveinvented a new and Improved Safety-Hook; and I hereby declare thefollowing to be a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, making part of thisSpecification, in which- Figure 1 is an elevation of the hook closed.Fig. 2 is an elevation showing the hook opened. Fig. 3 is a view of theswiveling ring detached from the hook. Figs. 4, 5, 6, 7, 8, and 9 aredetails to be referred to. Fig. 10 is a longitudinal sectional view.

'My invention relates to that class of hooks known as safety-hooks, andhas for its object to provide a hook to beused for a great variety ofpurposes, which will, when engaged, have no tendency to automaticallydisengage, and which will throw from its jaws automatically when openedany ring or other device which has been in engagement with it.

My invention consists in a double-jawed hook, onejaw of which isbifurcated at the end to fit over the other jaw, which is centrallylongitudinally grooved to contain a disengaginghook, which swings upontrunnions in the bifurcated jaw.

My invention further consists of sundry details of construction, ashereinafter fully described and specifically claimed.

My invention further consists in the combination, with asafety-hook, ofa divided ring swiveled to said book by a headed shank and a bifurcatedkeeper, as is hereinafter fully set forth.

In order that those skilled in the art may make and use my invention, Iwill proceed to describe the manner in which I have carried it out.

In the said drawings, A is the main hook, having the hollow butt a,having circular depressions l and 2 to receive studs 3 4, projectingfrom sections B G of the bifurcated hook. Along the sides certainportions, be, of hook A are cutaway, forming faces bc, against which theedges ofthe bifurcated hook abut when the hook is closed.

Within a longitudinal slot, d, in the main hook A is located a hook, D,which is swung on trunnions d, which enter the shell of the a raisedrib, e e, 'on piece B, to separate pieces B and 0, thereby forming achamber between them, in which the pivotal end of book D freely moveseccentric-allyto the movement of the bifurcated hook. The movement ofthe bifurcated hook is limited by a projecting stud, 7, on the rear endor butt, a, the said stud being aportion of a bifurcated stud or keeper,E, which is inserted transversely in the butt, for a purpose hereinafterdescribed. The movement of hook D and its length are so regulated thatwhen the bifurcated hook is opened to its fullest extent hook I) hastraveled up to and flush with the end of book A, so that whatever hook,8, or other object lies within the hook A it is forced out ofthe bightof said hook and detached therefrom. (See Fig. 2.)

Around the recess 2, leaving only a rib, 9, between, is a groove, f, inwhich lies a coiled spring, one end engaging projectionj in hook A, andthe other end engaging with projection j, so that the opening of thehook distends the spring, and upon the book being released it snaps to.

In the end of the hollow butt is inserted the shank H of a divided hook,I, and near the end of the shank is a groove, Z, which, when the shankis inserted into thebutt, comes opposite a transverse slot, E, throughthe butt, and into which slips the bifurcated stud or keeper E, the legsof which straddle the shank H in the groove 1, and prevent the shankfrom being withdrawn, though it can turn freely, thereby making aswivel-connection. The division in the ring I is so cut that when theshank is engaged in the butt by the key or keeper E the radius of travelof the hinged portion is so long that it cannot move on its pivot 12,because of being arrestedin its movement by being brought against theend of the hollow butt.

When it is desired to secure this safety-hook to a bar or link the ringis opened to insert it 5 by the following means: The bifurcated hook israised, and piece (which, whenthe hook is closed, covers a portion ofthe outer end of E) uncovers the keeper or key E, which being withdrawnallows the withdrawal of shank H. ID The link I is then opened, and thering-bar or linkiuserted, the shank H replaced in the butt, and key Einserted.

Having thus described my invention, what I claim as new, and desire tosecure by Letters 1 5 Patent, is

' l. The main hook A, provided with the rib 9 and interior recess, andrecess 1, and offsets b b c,in combination with the bifurcated hook B 0,having the studs 4 and 3, substantially as set forth.

2. The main hook A, provided with a longitudinal central groove, incombination with the hook D, located in said groove, and the bifurcatedhook B G, to which hook D isjournaled at 5, substantially as and for thepurpose described.

3. In combination with a safety-hook, sub-- sta ntiall y as described,the divided ring I, provided with a shank, H, having groove 1, and thebifurcated key E, all constructed, arranged, and operated asset forth.

4. The bifurcated key E, provided with the projection 7, in combinationwith hook B G and grooved shank I, whereby hook B 0, when closed, keepskey E in place, substantially as 3 5 described.

WILLIAM K. RAIRIGH.

Witnesses:

H. B. APPLEWHAITE, E. J. REDMoND.

